Features for testing the presence of `graphviz`¶

class sage.features.graphviz.Graphviz¶

Bases: sage.features.join_feature.JoinFeature

A Feature describing the presence of the dot, neato, and twopi executables from the graphviz package.

EXAMPLES:

sage: from sage.features.graphviz import Graphviz
sage: Graphviz().is_present()  # optional - graphviz
FeatureTestResult('graphviz', True)

class sage.features.graphviz.dot¶

Bases: sage.features.Executable

A Feature describing the presence of dot

EXAMPLES:

sage: from sage.features.graphviz import dot
sage: dot().is_present()  # optional - graphviz
FeatureTestResult('dot', True)

class sage.features.graphviz.neato¶

Bases: sage.features.Executable

A Feature describing the presence of neato

EXAMPLES:

sage: from sage.features.graphviz import neato
sage: neato().is_present()  # optional - graphviz
FeatureTestResult('neato', True)

class sage.features.graphviz.twopi¶

Bases: sage.features.Executable

A Feature describing the presence of twopi

EXAMPLES:

sage: from sage.features.graphviz import twopi
sage: twopi().is_present()  # optional - graphviz
FeatureTestResult('twopi', True)

Features for testing the presence of graphviz¶